public IGlyphTypefaceImpl CreateGlyphTypeface(Typeface typeface)
{
var skTypeface = SKTypeface.Default;
if (typeface.FontFamily.Key == null)
{
foreach (var familyName in typeface.FontFamily.FamilyNames)
{
skTypeface = SKTypeface.FromFamilyName(familyName, (SKFontStyleWeight)typeface.Weight,
SKFontStyleWidth.Normal, (SKFontStyleSlant)typeface.Style);
if (skTypeface == SKTypeface.Default)
{
continue;
}
break;
}
}
else
{
var fontCollection = SKTypefaceCollectionCache.GetOrAddTypefaceCollection(typeface.FontFamily);
skTypeface = fontCollection.Get(typeface.FontFamily, typeface.Weight, typeface.Style);
}
return(new GlyphTypefaceImpl(skTypeface));
}
public static TypefaceCollectionEntry Get(FontFamily fontFamily, FontWeight fontWeight, FontStyle fontStyle)
{
if (fontFamily.Key != null)
{
return(SKTypefaceCollectionCache.GetOrAddTypefaceCollection(fontFamily)
.Get(fontFamily.Name, fontWeight, fontStyle));
}
var typefaceCollection = s_cache.GetOrAdd(fontFamily.Name, new ConcurrentDictionary <FontKey, TypefaceCollectionEntry>());
var key = new FontKey(fontWeight, fontStyle);
if (typefaceCollection.TryGetValue(key, out var entry))
{
return(entry);
}
var skTypeface = SKTypeface.FromFamilyName(fontFamily.Name, (SKFontStyleWeight)fontWeight,
SKFontStyleWidth.Normal, (SKFontStyleSlant)fontStyle) ?? SKTypeface.Default;
var typeface = new Typeface(fontFamily.Name, fontWeight, fontStyle);
entry = new TypefaceCollectionEntry(typeface, skTypeface);
typefaceCollection[key] = entry;
return(entry);
}
public IGlyphTypefaceImpl CreateGlyphTypeface(Typeface typeface)
{
var skTypeface = SKTypeface.Default;
if (typeface.FontFamily.Key == null)
{
var defaultName = SKTypeface.Default.FamilyName;
foreach (var familyName in typeface.FontFamily.FamilyNames)
{
skTypeface = SKTypeface.FromFamilyName(familyName, (SKFontStyleWeight)typeface.Weight,
SKFontStyleWidth.Normal, (SKFontStyleSlant)typeface.Style);
if (!skTypeface.FamilyName.Equals(familyName, StringComparison.Ordinal) &&
defaultName.Equals(skTypeface.FamilyName, StringComparison.Ordinal))
{
continue;
}
break;
}
}
else
{
var fontCollection = SKTypefaceCollectionCache.GetOrAddTypefaceCollection(typeface.FontFamily);
skTypeface = fontCollection.Get(typeface);
}
return(new GlyphTypefaceImpl(skTypeface));
}
public IGlyphTypefaceImpl CreateGlyphTypeface(Typeface typeface)
{
SKTypeface skTypeface = null;
if (typeface.FontFamily.Key == null)
{
var defaultName = SKTypeface.Default.FamilyName;
var fontStyle = new SKFontStyle((SKFontStyleWeight)typeface.Weight, (SKFontStyleWidth)typeface.Stretch,
(SKFontStyleSlant)typeface.Style);
foreach (var familyName in typeface.FontFamily.FamilyNames)
{
if (familyName == FontFamily.DefaultFontFamilyName)
{
continue;
}
skTypeface = _skFontManager.MatchFamily(familyName, fontStyle);
if (skTypeface is null ||
(!skTypeface.FamilyName.Equals(familyName, StringComparison.Ordinal) &&
defaultName.Equals(skTypeface.FamilyName, StringComparison.Ordinal)))
{
continue;
}
break;
}
// MatchTypeface can return "null" if matched typeface wasn't found for the style
// Fallback to the default typeface and styles instead.
skTypeface ??= _skFontManager.MatchTypeface(SKTypeface.Default, fontStyle)
?? SKTypeface.Default;
}
else
{
var fontCollection = SKTypefaceCollectionCache.GetOrAddTypefaceCollection(typeface.FontFamily);
skTypeface = fontCollection.Get(typeface);
}
if (skTypeface == null)
{
throw new InvalidOperationException(
$"Could not create glyph typeface for: {typeface.FontFamily.Name}.");
}
var isFakeBold = (int)typeface.Weight >= 600 && !skTypeface.IsBold;
var isFakeItalic = typeface.Style == FontStyle.Italic && !skTypeface.IsItalic;
return(new GlyphTypefaceImpl(skTypeface, isFakeBold, isFakeItalic));
}
public IGlyphTypefaceImpl CreateGlyphTypeface(Typeface typeface)
{
SKTypeface skTypeface = null;
if (typeface.FontFamily.Key == null)
{
var defaultName = SKTypeface.Default.FamilyName;
var fontStyle = new SKFontStyle((SKFontStyleWeight)typeface.Weight, SKFontStyleWidth.Normal, (SKFontStyleSlant)typeface.Style);
foreach (var familyName in typeface.FontFamily.FamilyNames)
{
skTypeface = _skFontManager.MatchFamily(familyName, fontStyle);
if (skTypeface is null ||
(!skTypeface.FamilyName.Equals(familyName, StringComparison.Ordinal) &&
defaultName.Equals(skTypeface.FamilyName, StringComparison.Ordinal)))
{
continue;
}
break;
}
skTypeface ??= _skFontManager.MatchTypeface(SKTypeface.Default, fontStyle);
}
else
{
var fontCollection = SKTypefaceCollectionCache.GetOrAddTypefaceCollection(typeface.FontFamily);
skTypeface = fontCollection.Get(typeface);
}
if (skTypeface == null)
{
throw new InvalidOperationException(
$"Could not create glyph typeface for: {typeface.FontFamily.Name}.");
}
return(new GlyphTypefaceImpl(skTypeface));
}
public FormattedTextImpl(
string text,
Typeface typeface,
TextAlignment textAlignment,
TextWrapping wrapping,
Size constraint,
IReadOnlyList <FormattedTextStyleSpan> spans)
{
Text = text ?? string.Empty;
// Replace 0 characters with zero-width spaces (200B)
Text = Text.Replace((char)0, (char)0x200B);
SKTypeface skiaTypeface = TypefaceCache.Default;
if (typeface.FontFamily.Key != null)
{
var typefaces = SKTypefaceCollectionCache.GetOrAddTypefaceCollection(typeface.FontFamily);
skiaTypeface = typefaces.GetTypeFace(typeface);
}
else
{
if (typeface.FontFamily.FamilyNames.HasFallbacks)
{
foreach (var familyName in typeface.FontFamily.FamilyNames)
{
skiaTypeface = TypefaceCache.GetTypeface(
familyName,
typeface.Style,
typeface.Weight);
if (skiaTypeface != TypefaceCache.Default)
{
break;
}
}
}
else
{
skiaTypeface = TypefaceCache.GetTypeface(
typeface.FontFamily.Name,
typeface.Style,
typeface.Weight);
}
}
_paint = new SKPaint();
//currently Skia does not measure properly with Utf8 !!!
//Paint.TextEncoding = SKTextEncoding.Utf8;
_paint.TextEncoding = SKTextEncoding.Utf16;
_paint.IsStroke = false;
_paint.IsAntialias = true;
_paint.LcdRenderText = true;
_paint.SubpixelText = true;
_paint.Typeface = skiaTypeface;
_paint.TextSize = (float)typeface.FontSize;
_paint.TextAlign = textAlignment.ToSKTextAlign();
_wrapping = wrapping;
_constraint = constraint;
if (spans != null)
{
foreach (var span in spans)
{
if (span.ForegroundBrush != null)
{
SetForegroundBrush(span.ForegroundBrush, span.StartIndex, span.Length);
}
}
}
Rebuild();
}